132 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 77449 | Katy | 123,042 |
| 77433 | Cypress | 112,211 |
| 77084 | Houston | 109,115 |
| 77429 | Cypress | 95,938 |
| 77379 | Spring | 83,163 |
| 77346 | Humble | 75,577 |
| 77083 | Houston | 74,843 |
| 77450 | Katy | 73,226 |
| 77375 | Tomball | 71,198 |
| 77036 | Houston | 71,036 |
| 77095 | Houston | 69,912 |
| 77373 | Spring | 68,273 |
| 77521 | Baytown | 65,920 |
| 77077 | Houston | 63,421 |
| 77493 | Katy | 62,264 |
| 77396 | Humble | 58,893 |
| 77015 | Houston | 58,822 |
| 77072 | Houston | 58,681 |
| 77070 | Houston | 57,645 |
| 77082 | Houston | 57,269 |
| 77089 | Houston | 56,607 |
| 77044 | Houston | 55,746 |
| 77088 | Houston | 54,115 |
| 77388 | Spring | 52,910 |
| 77081 | Houston | 51,366 |
| 77040 | Houston | 50,446 |
| 77099 | Houston | 49,271 |
| 77080 | Houston | 49,064 |
| 77064 | Houston | 48,924 |
| 77338 | Humble | 47,335 |
| 77093 | Houston | 46,091 |
| 77057 | Houston | 45,394 |
| 77007 | Houston | 45,337 |
| 77060 | Houston | 44,920 |
| 77389 | Spring | 44,545 |
| 77055 | Houston | 44,088 |
| 77073 | Houston | 43,684 |
| 77339 | Kingwood | 43,364 |
| 77090 | Houston | 41,843 |
| 77075 | Houston | 41,012 |
| 77042 | Houston | 40,725 |
| 77049 | Houston | 40,373 |
| 77008 | Houston | 40,155 |
| 77063 | Houston | 39,994 |
| 77377 | Tomball | 39,154 |
| 77065 | Houston | 38,393 |
| 77066 | Houston | 38,315 |
| 77571 | La Porte | 37,659 |
| 77024 | Houston | 37,647 |
| 77074 | Houston | 37,467 |
| 77034 | Houston | 37,185 |
| 77014 | Houston | 36,314 |
| 77092 | Houston | 36,185 |
| 77502 | Pasadena | 36,126 |
| 77009 | Houston | 36,107 |
| 77004 | Houston | 35,866 |
| 77520 | Baytown | 35,724 |
| 77079 | Houston | 35,540 |
| 77047 | Houston | 35,248 |
| 77506 | Pasadena | 35,243 |
| 77087 | Houston | 35,192 |
| 77035 | Houston | 34,849 |
| 77096 | Houston | 33,991 |
| 77041 | Houston | 33,180 |
| 77076 | Houston | 32,641 |
| 77045 | Houston | 32,482 |
| 77536 | Deer Park | 32,421 |
| 77530 | Channelview | 32,065 |
| 77067 | Houston | 31,800 |
| 77532 | Crosby | 31,778 |
| 77038 | Houston | 31,271 |
| 77017 | Houston | 30,797 |
| 77018 | Houston | 29,595 |
| 77016 | Houston | 29,480 |
| 77025 | Houston | 29,177 |
| 77091 | Houston | 29,135 |
| 77086 | Houston | 28,623 |
| 77039 | Houston | 28,335 |
| 77005 | Houston | 28,231 |
| 77033 | Houston | 28,079 |
| 77345 | Kingwood | 27,574 |
| 77071 | Houston | 26,794 |
| 77054 | Houston | 26,696 |
| 77598 | Webster | 26,638 |
| 77043 | Houston | 26,343 |
| 77022 | Houston | 26,135 |
| 77504 | Pasadena | 25,758 |
| 77020 | Houston | 25,583 |
| 77023 | Houston | 24,962 |
| 77062 | Houston | 24,892 |
| 77021 | Houston | 24,884 |
| 77061 | Houston | 24,238 |
| 77586 | Seabrook | 24,019 |
| 77006 | Houston | 23,927 |
| 77503 | Pasadena | 23,899 |
| 77505 | Pasadena | 23,686 |
| 77019 | Houston | 23,662 |
| 77056 | Houston | 23,314 |
| 77447 | Hockley | 22,766 |
| 77069 | Houston | 20,935 |
| 77026 | Houston | 20,536 |
| 77048 | Houston | 20,430 |
| 77002 | Houston | 19,616 |
| 77027 | Houston | 19,269 |
| 77058 | Houston | 18,572 |
| 77051 | Houston | 18,506 |
| 77059 | Houston | 18,386 |
| 77028 | Houston | 18,379 |
| 77037 | Houston | 17,806 |
| 77013 | Houston | 17,680 |
| 77401 | Bellaire | 17,125 |
| 77085 | Houston | 16,947 |
| 77012 | Houston | 16,780 |
| 77098 | Houston | 16,318 |
| 77587 | South Houston | 16,058 |
| 77029 | Houston | 15,931 |
| 77031 | Houston | 15,740 |
| 77011 | Houston | 15,681 |
| 77078 | Houston | 14,705 |
| 77032 | Houston | 13,536 |
| 77030 | Houston | 12,976 |
| 77336 | Huffman | 12,510 |
| 77068 | Houston | 12,289 |
| 77094 | Houston | 10,718 |
| 77562 | Highlands | 9,805 |
| 77003 | Houston | 9,721 |
| 77547 | Galena Park | 9,380 |
| 77050 | Houston | 5,854 |
| 77204 | Houston | 4,056 |
| 77046 | Houston | 1,873 |
| 77010 | Houston | 620 |
| 77507 | Pasadena | 578 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 132 ZCTAs in Harris County, Texas (US Census).